Half to alfred m



(No Model.) Y

'W. SELLERS,

FLOORING CLAMP.

FIG .1;

FIG .2.

N. PETERS. PhotmLZthngmphar. wnmn m. 0.0.

UNITED STATES PATENT OFFICE.

WILLIAM SELLERS, OF HAVERHILL, MASSACHUSETTS, ASSIGlflOR OF ONE- HALF TO ALFRED M. SARGENT, OF SAME PLACE.

FLOORINGBCLAMP.

SIPZBCIPICATION' forming part of Letters Patent No. 367,243, dated July 26, 1887.

Application filed December 20, 1886. Serial No. 222,132. (No model.)

.To ail whom it may concern:

Be it known that I, WILLIAM SELLERS, a

citizen of the United States, residing at Haw erhill,in the county of Essex and State of Mas sachusetts, have invented a newand useful Improvement in Flooring-Clamps, of which the following is a specification.

Myinvention relates to improvements in imv casing and are provided at their lower endswith quick-threaded tapering screws, so that by turning the handle the three screws are simultaneously forced into the under floor, thus holding the implement firmly while a wedge is forced between the clamp and the flooringboard to be laid. By reversing the action of the cog-wheels the screws are quickly withdrawn and the clamp released.

Referring to the accompanying drawings,

v Figure 1 is a side view of a floor-clamp, em-

bodying my invention. Fig. 2 is a longitudinal section of the same, and Fig. 3 is a plan View with the cover removed.

At the apex of the triangular casing A, and at each opposite corner or angle of the same, are 4 5 journaled cog-wheelsF F F, of about one-half the diameter of the central cog-wheel, E, and in gear with the same. The spindles G, that carry the cog-wheels F, project below the bottom of the casing AI, and are formed with ta- 5o pering screws, G, having a quick thread, which, when the clamp is in use, are screwed into the under floor. I

By turning the handle D, and with it the central cog-wheel, E, motion is transmitted to 5 5 the three small cog-wheels F, so that they are all rotated at the same time, and the screws G enter the under floor, thus holding the implement firmly. A wedge is then forced between the curved end of the casing A and the floor- 6o ing-board to be laid,which will force the board into position, when it is secured by nailing.

The implement or clamp can then be easily and quickly removed by reversing the action of the cog-wheels to withdraw the screws.

WVhat I claim as my invention is- 1. A floor-clamp consisting of a casing inclosing' cog-wheels, the lower ends of their spindles being provided with tapering screws, and means for rotating said wheels simultane- 7o ously, substantially as set forth. v

2. The combination of the casing A, cover B rod D, and cogwheel E, with the cogwheels F and spindles G, provided at their lower ends with quickthreaded tapering 75 screws, substantially as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM SELLERS.

Witnesses: J. H. ADAMS,

E. PLANTA. 

